Coal IndiaNSE:COALINDIA +0.95%90 Operating Margin % is 20.92% as of Mar. 2026, which is 10% below its 10-year median of 23.23. GuruFocus rates NSE:COALINDIA with a GF Score™ of 90/100 and a GF Value™ of ₹519.18 (Modestly Undervalued). The stock has 4 warning signs investors should review. Among 130 Other Energy Sources companies, Coal India ranks better than 90% on this metric.
Operating Margin % is calculated as Operating Income divided by its Revenue. Coal India's Operating Income for the
three
months ended in Mar. 2026 was ₹97,265 Mil. Coal India's Revenue for the
three
months ended in Mar. 2026 was ₹464,900 Mil. Therefore, Coal India's Operating Margin % for the quarter that ended in Mar. 2026 was 20.92%.
Good Sign:
Coal India Ltd operating margin is expanding. Margin expansion is usually a good sign.
The historical rank and industry rank for Coal India's Operating Margin % or its related term are showing as below:
NSE:COALINDIA'
s Operating Margin % Range Over the Past 10 Years
Min: 3.73 Med: 23.23 Max: 32.53
Current: 22.86
NSE:COALINDIA's Operating Margin % is ranked better than 90% of 130
companies
in the Other Energy Sources industry
Industry Median: 4.57
vs NSE:COALINDIA: 22.86
Coal India's 5-Year Average Operating Margin % Growth Rate was 0.10% per year.
Coal India's Operating Income for the
three
months ended in Mar. 2026 was ₹97,265 Mil.
Its Operating Income for the trailing twelve months (TTM) ended in Mar. 2026 was ₹311,053 Mil.
Coal India (NSE:COALINDIA) Operating Margin % Explanation
Just like Gross Margin %, it is important to see a company maintains its operating margin over time. Among the same industry, a company with higher operating margin is more efficient in its operation. It is also more stable during industry slowdown or recessions. Peter Lynch prefers those with higher margins than those with lower margins.
Be Aware
Operating Margin % can be manipulated by adjusting the rate of depreciation, depletion and amortization (DDA).
If a company is facing competition, its Operating Margin % may decline. Often the Operating Margin % declines well before the company's Revenue or even profit decline. Therefore, Operating Margin % is a very important indicator of whether the company is facing problems.
For instance, by 2012, Nokia (NOK)'s problems were well known and its stock had lost more than 90% of its market value since 2007. But Nokias Operating Margin % had already been in decline since 2002, although its Earnings per Share (Diluted) were still rising. Investors who paid attention to Operating Margin % would have avoided this huge loss. The same can be said for Research-in-Motion (RIMM).
Therefore, Operating Margin % is a very important screening filter for GuruFocus. GuruFocus's Buffett-Munger screener requires that the profit margin is either consistent or expanding. The Model Portfolio of the Buffett-Munger screener has outperformed the market every year since inception in 2009.
Coal India Operating Margin % Related Terms
Coal India Operating Margin % Historical Data
* Premium members only.
The historical data trend for Coal India's Operating Margin % can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Coal India Operating Margin % Competitor Comparison
For the Thermal Coal subindustry, Coal India's Operating Margin %, along with its competitors' market caps and Operating Margin % data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Coal India Operating Margin % vs Other Energy Sources Industry
For the Other Energy Sources industry and Energy sector, Coal India's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Coal India's Operating Margin % falls into.
Operating Margin % - also known as operating income margin, operating profit margin and return on sales (ROS) - is the ratio of Operating Income divided by net sales or Revenue, usually presented in percent.
Coal India's Operating Margin % for the fiscal year that ended in Mar. 2026 is calculated as
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Coal India (NSE:COALINDIA) has a Operating Margin % of 20.92% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Coal India and its competitors. This is 10% below median its historical median of 23.23. Over the past decade, Coal India's Operating Margin % has ranged from 3.73 to 32.53. According to the industry distribution chart, Coal India ranks #13 out of 130 companies in the Other Energy Sources industry, placing it in the top 10%.
Is Coal India's Operating Margin % too high?
Coal India's current Operating Margin % of 20.92% is 10% below median its 10-year median of 23.23. Over the past 10 years, this metric has ranged from a low of 3.73 to a high of 32.53. The Other Energy Sources industry median Operating Margin % is 4.57. Coal India's value of 20.92% is 357.8% above this industry median. Based on the distribution chart, Coal India ranks #13 out of 130 companies in the Other Energy Sources industry, which is in the top quartile — a strong position relative to peers. Overall, Coal India has a GF Score™ of 90/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Coal India's Operating Margin % compare to competitors?
According to the Other Energy Sources industry distribution chart, Coal India ranks #13 out of 130 companies for Operating Margin %. This places Coal India in the top 10% of its industry — outperforming the majority of peers. The industry median Operating Margin % is 4.57. Coal India's value of 20.92% is 357.8% above this benchmark. Historically, Coal India's own Operating Margin % has ranged from 3.73 to 32.53 over the past decade. While the company's 10-year median is 23.23 vs. the industry median of 4.57, Coal India has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Operating Margin % for an Other Energy Sources company?
The median Operating Margin % among Other Energy Sources companies is 4.57, based on 130 companies in the industry. Companies in the top quartile (top 25%) have a Operating Margin % significantly above this median, while those in the bottom quartile fall well below. However, Operating Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Coal India's current Operating Margin % of 20.92% is 357.8% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Operating Margin % mean?
A high Operating Margin % can signal that a stock is expensive relative to its fundamentals. Operating margin is the ratio of total operating income to net sales. View historical data on Coal India and its competitors. For the Other Energy Sources industry, the median Operating Margin % is 4.57 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Coal India's current Operating Margin % is 20.92%, which is 10% below median its own 10-year median of 23.23. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Coal India stock overvalued right now?
Based on GuruFocus' analysis, Coal India (NSE:COALINDIA) is currently considered Modestly Undervalued. The stock's GF Value™ is ₹519.18, compared to a current price of ₹438.90 — trading 15.5% below its estimated fair value. The current Operating Margin % is 20.92%, which is 10% below median its 10-year median of 23.23 and 357.8% above the Other Energy Sources industry median of 4.57. Coal India's overall GF Score™ is 90/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Operating Margin % calculated?
Operating Margin % is calculated from a company's financial statements. For Coal India (NSE:COALINDIA), the current Operating Margin % is 20.92% as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Coal India (NSE:COALINDIA) Overvalued in 2026?
Based on GuruFocus' analysis, Coal India stock appears to be undervalued.
The current stock price of ₹438.90 is trading 15.5% below its estimated GF Value™ of ₹519.18.
GuruFocus considers Coal India to be Modestly Undervalued.
Key valuation signals for NSE:COALINDIA:
Operating Margin %: 20.92% (10% below median its 10-year median of 23.23)
GF Value™: ₹519.18 vs. price of ₹438.90 (15.5% below fair value)
Industry Position: 357.8% above the Other Energy Sources median (#13 of 130)
No single metric tells the full story. See the NSE:COALINDIA stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Coal India Ltd is a state-owned coal mining company, which was formed when the government took over many private coal mines. Coal India is responsible for the vast majority of India's coal production. The Company is engaged in a single segment business of Coal mining.
90GF Score
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